As early as last summer, I saw JD crowdfunding this product. After a month of crowdfunding, it did not reach the expected amount of 100000 crowdfunding. I thought I could not see this product, but I unexpectedly got a chance to try it in Lei Feng. I was excited to let us see what the purpose of this 360 air detection master is.

The outer packaging of 360 Air Testing Master adopts the common kraft linerboard material, which is simple and generous in design. This kind of product is really not suitable for the fancy design of the packaging box.

The design of 360 Air Testing Master's wood grain middle frame is very beautiful. Although it is not really wood, it is made of plastic, but it still gives a natural beauty.

Power adapter and 360 air detection master bottom Parameter, or it can be connected General mobile power supply 。

This button on the top is the only button of 360 Air Testing Master. The feedback feel is clear and the workmanship is good.

There is only one USB power interface and one factory reset jack on the back of 360 Air Testing Master.

After the power supply is connected, 360 air detection master automatically starts the machine, and displays the Clock calendar.

Press the top button, and the temperature and humidity detection function is available. Users can intuitively understand the pollution concentration values, temperature and humidity conditions through the screen, and the color of the screen will also display with the high and low status of the values: health is green, warning is yellow, and danger is red.

Since it is a 360 product, the supporting mobile phone APP "360 Air Guard" is indispensable. Its icon is designed according to the appearance of 360 Air Testing Master. As for why the App is not called 360 Air Detection Master, this is another small mystery. It is predicted that it will become a super app in the future, which can access more intelligent hardware at the same time, such as air purifier... Let's wait and see.

This mobile terminal software of 360 Air Guard can be downloaded from 360 mobile assistant at any time, and it is very practical to learn urban pollution information through it even without binding hardware. The classic version of 360 Air Detection Master has been experienced before, so this app is still installed in the mobile phone.

After binding the hardware, you can read the current PM2.5, PM10 and other data, as well as temperature and humidity data in real time from the 360 air detection master hardware. This software can also predict urban haze in the next 7 days, and can prevent respiratory health in advance.

After understanding the role of 360 Air Testing Master, I also worked as an air inspector at Shantou University near my location.

Because many indoor places in the school were locked during the holiday, I couldn't make a comprehensive inspection, so I focused on the TOEFL examination room.

The PM2.5 detected in the air on the first and second floors is 40, and it turns to 45 on the third floor. It is speculated that the dust in the air outside and on the first floor is reduced because it has just rained. The value of PM2.5 on the third floor is increased because there is less activity and more dust on the third floor, but it is within a reasonable range.

Finally, I came to the door of the washroom for testing. It turned out that the air was better for men!

The detection principle adopted by 360 air detection master is laser dust sensor. According to Du Niang, the laser dust sensor is laser scattering principle, which is composed of a fan collecting air, a uniquely designed air duct, a laser and a chip. The air is sucked into the air duct quantitatively by the fan, and then flows through the air duct to the laser. The light scatters when it meets the dust particles in the air. The chip receives the light scattering data, calculates the particle size and number, and then converts it into a common μ g/m3 unit. This conversion algorithm determines whether the displayed data is accurate. It is an exclusive secret, which requires the accumulation of technology and experience, the accurate calibration of the standardized calibration room of a large factory, the design of compensation algorithms for particles of different specifications, the compensation of deviations from different pollution environments, and the consistency calibration of each sensor.

There are several rumors about the origin of this sensor. 360 independently purchases imported lasers to assemble sensors; Sifang photoelectric integrated sensor; Panteng Technology packaged sensor. The BOM of raw materials is the highest level of confidential information, which is impossible for outsiders to know. The laser should be imported technology alone. In fact, domestic sensor suppliers also purchase imported lasers for assembly and resale. Accuracy, quality and service life are derived from the packaging capacity, production line maturity and exclusive algorithm. The current phenomenon is that large Internet companies, including 360, have a strong say in the supply chain. Because they have strong funds and a huge Internet user market as the basis, traditional large supply chain enterprises are willing to take this opportunity to transform into the Internet of Things market. Therefore, the quality of raw materials, the scale of production lines, and the price are the most outstanding, and the ultimate benefit is the Internet users. This set of sensors is expected to be around 130 yuan, and there should be room for downward adjustment with the lifting.